Dinosaurs came from space, they fell to Earth from a destroyed planetoid.

A planet sized comet from the Draco star constellation entered our solar system around 12,800 years ago and, as it neared Earth's Roche Field, it began to get torn apart by tidal forces. The Earth was showered with debris from this disintegrating planetoid, but after having a near brush with Earth, it continued towards Mars (showered that planet with debris), then as it neared Jupiter's incredibly powerful Roche Field it was absolutely destroyed, and it's remnants now form what we know thoday as the asteroid belt.

This planet/comet was known as the Great Serpent/Typhon/Tiamat/Satan in antiquity because it once held reptilian lifeforms. These reptilian creatures were the dinosaurs, and they fell to earth (already dead of course) embedded in ice, water and thick mud/rock from the destroyed planet.

When fossils are being discovered in Earth strata, we have to remember that this strata is not of Earthly origin, but from the planetoid that was destroyed so long ago.

This is where the saying, 'It's raining frogs' comes from.